Grease-gun connection



R. E. M GAHEY GREASE GUN CONNECTION 1 Filed June 15, 1927 gnventoz ill) interactions, mechanical movements structure.

Patented if i, 'lQZd ROBERT E. McG-AHEY, OF

GREASE-GUN Application filed. June 2.5,

This invention relates to lubricating devices and has for an object to provide a device of the grease gun type specially adapted for the greasing oi large bearings, such as connecting rods of locomotives and the like, with improved means for attaching the gun proper to the lubricated member.

A further object of the invention is to provide inter-acting parts of the grease gun and nipple applied to the lubricated device whereby a valvc in the nipple automatically closes in normal conditions and is automatically opened by the application of the gun thereto A lurther object of the invention is to provide improved means for maintaining the parts in the united relation while the lubricant is being introduced with the minimum expenditure of time in the releasing of the parts.

With these and other objects in view, the invention comprises certain novel parts, elements, units, combinations, constructions and functions as disclosed in the drawings, togather 'with mechanical and functional equivalents thereof as will be hereinaiter more fully described and claimed.

In the drawings:

Figure .1 is a diametrical sectional view taken longitudinally through the valve Figure 3 a diametrical sectional View taken on the same plane as Figure 1 but with the parts only partially coupled Figure 3 is a perspective view of the nipple.

Figure 4 is an enlarged perspective view of the lower end of the gun showing the unit for intcrconncction with the nipple.

Like characters of reference indicate corresponding parts tl'iroughout the several news.

The improved luln'icatiug device which forms thc subject matter of this application comprises a cylinder 10 into which the lubricant in the form of grease or the like is introduced with a follower 11 for forcing the lubricant out of the cylinder and through the mechanism hereinafter dc scribed.

To accomplish the result, the journal hearing to be lubricatcd is permanently provided with a nipple indicated at 13 which is attached to the journal in any approved ALEXANDELQ, VIRGINIA.

convenient and ordinary means of attachment.

The nipple 13 is provided with a duct 15 i communicating directly with the journal bearing, which said duct is interrupted by a slide valve 1b having a port 17 which at times adapted to register with the duct 15 and at other times to be out of register to close the duct. The closing of the valve is accomplished automatically by a spring 18 which is inserted into the nipple at the back of the valve member 16 and is held in operative position in any approved manner as by the screw plup 19. The valve 16 also is provided with a stud 20 which operates in a reduced guidcway 21 in the nipple. 'lhe open position of the valve 16 is shown at Figure l and the closed position is shown at Figure 2.

(lo-noting with the nipple is a unit indicated as an entirety at 22 secured to the normally lower end of the cylinder 10. This attaching to the cylinder may be in any approved manner and by the use of any approved means, but a screw thread attachment 523 is shown, this being a preferred form so that the unit 22 may be bodily removed from the cylinder 10 for the purpose of filling the cylinder with the lubricant. This unit 22 is provided with a duct 24 communicating with the interior of the cylinder and also properly proportioned to register with the duct 15 of the nipple when in operative position as indicated at l. The connection between the unit 22 and the nipple 13 may be of any usual and ordi nary type but preferably a dove-tail connection as indicated by the overhanging ribs 25 of the nipple co-ucting with the plate-like section 26 of the unit 22. lVhen this form of connection is employed, the device is unitcd by sliding the platc-like member 26 into the nipple under the overhanging ribs 25. such movement being indicated at Figure 2 with its completed position shown at Figure 1-. A stop 27 is provided which is secured to the plate 26 in any approved manner as by the bolts 28, and the united parts are held in such united relation by means of a detent 29, slidably mounted in ears 30 in the unit 22. A limiting pin 31,

here shown as a cotter pin, is introduced between the cars 30 and a bar 32 is provided for manually actuating the'detent 29 and Figure also sols as u mean for orcventing loss oi the detect 29 from Joe unit 322 The stop 27 carries a pin. 3d pro pzzriy positioned to enter the reduced opening n as the unit 22 is niunuull y forced, from its inope 'stive position as shown at Figure 2, thereby pushing back the valve lo ugeinsi; the tension of the spring 18 until the port 1? registers with the conduit This being accomplished, the ports are in the relation shown at Figure 2 and ihe device is ready to operate.

In. the utilization of the zipper-aces, the organization to be lubricated will be providioil at its several journals Wliill nipples of the type shown at l3 and a single gun. einbozlying the cyiino er 1c and "the unit 22 will serve to lubricate all of such journals by being attached in turn to the several nipples. The gun. may, of course, be retained al, a. central location or in the case of locomotive for instance may be carried upon device when lubricaring becomes necessary. However this is handled, the gun will be st'tacbeil to 'lhc nipple when and if ecessury by first lifting the cletcnt fillgznanuull sliding the unit into engagement-with. the Where upon the pin will opera. the valve iiiand the follower ll will be forced downwardly by any appropriate form of mechanism.

, forcing out the lubricei'ii through the coniluiis 24. end 15, pass-lug through tis eport 1?. When ibe device is re EOVBEl. from the ni le, the spring 18 uuor oatically closes {be opening to i -e journal by forkzingthe valve 15 to the position shown at Figure .2.

The oocnin and closure of this velveis" L L: D H l eppiu therefore, enti" if] automatic with the cation of the in 1 r0 the nipple.

What i clsi u be new is: 1 A lubriculing organization comprising a nipyle i", a conduit, a valve sliclably mounted in the to plo uinl provided Wish a, port ml. lie 1' u times zer with the conduit, w epring adapted to llUlCl the valve will; the port normally out oi register with the co: luit, 2i lubric: rib-er comprising a port boring sliding e gzigeiceut with rho .Lippie, curl moans cam? by the iubricuring member for uuioinericully opening the valve Wl7-1l'l slirlubly moved to operative position 2, lubricating organizul'ion comprising le having u commit a valve sliciably ccl the nipple and provided with s. o spitecl of, shoes to regisrcr with the cocci, o adopted to normally lioirl the valve with the porboul: ofregistcr with the conduit, a lubricating member having a conduit adapted to register with theconduit oi the nipple, (love-tailed interconnecting means between the lubricating member and the nipple, and means carried. by the lubricating membcrfor automatically moving the valve against the tension of the s nking when the lubricating member is c0upied. with the nipple.

A lubricating organization comprising a nip ie having a conduit, a valve chamber intersecting the conduit, or valve sliilably mounted in the valve chamber and having a port adopted to register at Li mcs'wii h the coniluit, :rspriug positioned to hold the valve with the port, normally out of register with rho conduit, :1 lubricating member having means for sliding interconnection with the nipple,'ineans carried by the lubricating member to normally move the valve against ihe tension of the spring to register the port with the conduit, and manual means for locking the lubricating member and nipple together.

i. A lubricating organization comprising a nipple having a, conduit, a valve mounted to slide and to open and close the conduit, overluuiging ribs formed upon the nipple a lubricating member having a, part properly proportioned to slide under the overhanging ribs and provided with a conduit properly positioned to register with the conduit of the nipple, means carried by the lubricating member for normally opening the slide valve When the parts are assembled, and a.

"llidiiig detent carried by the lubricating member adapted to lock the lubricating member in operative engagement with the nipple.

5. A lubricating organization comprising a nipple having a conduit, a valve intersecting the conduit, and provided with a port adopted at times to register with the conrluit, spring adapted to normally hold the valve with its port out of register with the conduit, a lubricating device structurally arranged for sliding interconnection with the nipple and having u, conduit adapted to register with the conduii of the nipple when the parts are assembled, and a, pin carried by the lubricating member adapted to engsge and move the valve against the tension of the spring to register the port with the assembled conduits.

In testimony whereof I uflix my signature.

ROBERT E. MGGAHEY. 

